Modeling of hydrodynamic impact on underwater gas pipeline in A trench with liquefied soil
DOI:
https://doi.org/10.7242/1999-6691/2011.4.3.25Keywords:
underwater pipe, standing wave, finite element method, dry friction model, liquefied soilAbstract
The two-dimensional problem of standing wave impact on an underwater gas pipeline is discussed. The pipeline is placed in a trench filled with liquefied soil. The unsteady problem of the motion of heavy fluid is solved using the finite element method and the Lagrangian approach. A rheological model of dry friction represents pipe-to-soil adhesion. It is shown that the frame (liquefied soil) rigidity parameters and a dry friction force influence the pipeline oscillations.
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